论文部分内容阅读
本课题为某母猪产房构置了两个0.64米~2的石床以便在冬季从畜舍排气中回收热量来预热进气。对石层厚度、进排气流交替通过石床的周期以及进排气流量对回热通风系统工作的影响进行了测定。应用正交设计进行了一组次数减半的析因试验。在试验中,系统的热回收效率平均达到0.60,而除湿系数则为0.43。进排气流通过石床的周期对系统的热回收和除湿功能有显著影响,石层的厚度在本试验中未呈现重要作用;进排气流量有强烈的交互作用。因此,这种回热通风系统以采用进排气质量流量基本相等,石床厚度0.4米以及热回收效益0.5左右为宜。
The subject of a sow delivery room configuration of two 0.64 m ~ 2 stone bed in order to recover heat from the barn in the winter to preheat the air intake. The influence of the thickness of the stone layer, the cycle of the intake and exhaust air flow alternately through the stone bed, and the intake and exhaust flow rate on the operation of the regenerative ventilation system was also measured. Orthogonal design was used to conduct a factorial experiment of reducing the number of times by half. In the test, the system achieved an average heat recovery efficiency of 0.60 and a dehumidification coefficient of 0.43. The cycle of the intake and exhaust flow through the stone bed has a significant effect on the heat recovery and dehumidification function of the system. The thickness of the rock layer does not play an important role in this test; the intake and exhaust flow have a strong interaction. Therefore, this kind of regenerative ventilation system adopts the same equal mass flow rate of intake and exhaust, the stone bed thickness is 0.4m and the heat recovery efficiency is about 0.5.